Carroll County, Illinois Property Taxes

Name: Property Tax Bills Across Carroll County, Illinois
Creator: Ownwell
License: https://creativecommons.org/licenses/by-nc/4.0/

Median Carroll County effective property tax rate: 2.34%, significantly higher than the national median of 1.02%.
Median Carroll County home value: $86,910
Median annual Carroll County tax bill: $2,178, $222 lower than the national median property tax bill of $2,400.

How are property taxes in Carroll County calculated?

Property taxes in Carroll County are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.

Understanding your county's property tax system, exemptions, and reduction opportunities can lead to significant savings. Whether you live in a city in Carroll County or another part of Carroll County, knowing local tax details benefits homeowners and investors.

Last Updated March 1, 2025

Carroll County, Illinois Property Tax Bill Calculator

Property Assessed Value

$100,000

$1,500,000

$3,000,000

Median Effective Tax Rate

2.34%

Estimate Property Tax Bill

$2,034

$1,887

Ownwell’s Carroll County Property Tax Bill Calculator empowers homeowners, real estate investors, and potential buyers to estimate their annual property taxes in Carroll County with just two data points. By entering your property's estimated assessed value, our calculator applies Carroll County’s median effective tax rate to accurately estimate your property tax bill. Note that your property's assessed value — determined by your county — reflects any exemptions you may have, ensuring a more precise calculation for your property tax obligations. This insightful tool helps you understand potential tax liabilities and highlights how Ownwell can assist in reducing property taxes in Carroll County. For those interested in more localized information, please scroll down to explore city-level trends!

Property Tax Rates Across Carroll County, Illinois

Local government entities in Illinois set tax rates, which can vary widely within the state. Annually, each county estimates its required budget to provide services and divides that by the total value of all taxable property within its jurisdiction. This calculation results in the property tax rate. While there are votes and laws involved in setting tax rates and budgets, in a nutshell, this is the annual process. Below, you can compare Carroll County's effective property tax rate to other counties in Illinois or the U.S. median property tax rate. Carroll County has a median property tax rate of 2.34%, significantly higher than the national median of 1.02%. Within Carroll County, Milledgeville has one of the highest median tax rates at 2.76%, while Lanark offers a lower rate at 1.96%. This variation highlights the importance of understanding local property tax rates, as they directly impact the annual tax bill. With the national median property tax bill at $2,400, property owners in Carroll County might experience higher annual costs due to the elevated tax rates.

Property Tax Rates Across Carroll County, Illinois

Source: Ownwell

1.96%

2.36%

2.76%

Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.

Median Effective Carroll County Tax Rate

2.34%

Median Effective Illinois Tax Rate

2.35%

Median Effective United States Tax Rate

1.02%

Property Tax Rates Across Carroll County, Illinois

City	10th Percentile	25th Percentile	Median Tax Rate	75th Percentile	90th Percentile
Chadwick	1.61%	2.16%	2.60%	3.13%	3.64%
Lanark	1.53%	1.82%	1.96%	2.10%	2.71%
Milledgeville	1.87%	2.36%	2.76%	3.22%	3.63%
Mount Carroll	1.59%	2.14%	2.63%	3.11%	3.66%
Savanna	1.39%	2.00%	2.64%	3.52%	3.94%
Shannon	1.30%	1.68%	2.02%	2.34%	2.63%
Thomson	1.63%	2.15%	2.55%	2.92%	3.14%
Morrison	N/A	N/A	N/A	N/A	N/A
Polo	N/A	N/A	N/A	N/A	N/A

Source: Ownwell

Property Tax Assessment Values Across Carroll County, Illinois

When examining property taxes in Carroll County, understanding the distinction between "market value" and "assessed value" is crucial. The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. The Carroll County Assessor's Office estimates the market value for tax purposes. The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill. Assessment notices: In Carroll County, assessment notices are sent in the spring each year. They’ll typically reach your mailbox by the middle of April. Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill. By providing insights into how assessed and market values are determined, this section helps property owners navigate their tax responsibilities and understand the valuation processes affecting their property taxes in Carroll County. For example, the median tax bill in Carroll County is $2,400, with tax bills ranging significantly across the county. Lanark has the highest median home price at $188,704.

Property Tax Assessment Values Across Carroll County, Illinois

Source: Ownwell

$54,285

$121,495

$188,704

Median Carroll County Market Value

$86,910

Median Illinois Market Value

$194,700

Median United States Market Value

$235,294

Property Tax Assessment Values Across Carroll County, Illinois

City	10th Percentile	25th Percentile	Median Home Price	75th Percentile	90th Percentile
Chadwick	$39,516	$59,438	$82,540	$120,868	$177,372
Lanark	$54,950	$87,830	$188,704	$358,329	$611,698
Milledgeville	$43,501	$61,940	$84,815	$119,550	$168,865
Mount Carroll	$35,626	$54,208	$83,770	$125,520	$174,892
Savanna	$21,404	$34,707	$54,285	$86,880	$131,176
Shannon	$42,767	$63,231	$94,401	$139,517	$190,349
Thomson	$30,248	$54,240	$90,400	$136,812	$183,867
Morrison	N/A	N/A	N/A	N/A	N/A
Polo	N/A	N/A	N/A	N/A	N/A

Source: Ownwell

Property Tax Bills Across Carroll County, Illinois

In Carroll County, IL, property tax bills are calculated based on the assessed value of a home, which is a percentage of its market value. The local tax rate is then applied to this assessed value to determine the tax bill. Several factors influence these calculations, including the property's location, improvements, and any applicable exemptions. For instance, residents in Lanark face the highest median tax bill at $3,873, while those in Savanna encounter a significantly lower median bill of $1,472. Carroll County's tax bills can vary widely, with the 25th percentile at $1,214 and the 75th percentile reaching $3,938. At the 90th percentile, homeowners might pay as much as $7,124. These figures show that property taxes in Carroll County can substantially impact homeowners, especially when compared to the national median tax bill of $2,400. Understanding these factors and how they contribute to the overall tax bill is crucial for homeowners aiming to manage their property tax obligations effectively.

Property Tax Bills Across Carroll County, Illinois

Source: Ownwell

$1,472

$2,673

$3,873

Median Carroll County Tax Bill

$2,178

Median Illinois Tax Bill

$4,715

Median United States Tax Bill

$2,400

Property Tax Bills Across Carroll County, Illinois

City	10th Percentile	25th Percentile	Median Tax Bill	75th Percentile	90th Percentile
Chadwick	$776	$1,285	$2,179	$3,477	$5,731
Lanark	$1,003	$1,818	$3,873	$7,312	$12,131
Milledgeville	$890	$1,535	$2,362	$3,579	$5,826
Mount Carroll	$649	$1,243	$2,181	$3,624	$5,565
Savanna	$411	$763	$1,472	$2,419	$3,771
Shannon	$645	$1,104	$1,900	$3,033	$4,969
Thomson	$635	$1,193	$2,217	$3,601	$5,353
Morrison	N/A	N/A	N/A	N/A	N/A
Polo	N/A	N/A	N/A	N/A	N/A

Source: Ownwell

Find your City

Chadwick

Lanark

Milledgeville Mount Carroll

Savanna Shannon

Thomson